Volcano earthquake report for Monday, 3 May 2021

Quakes detected near: Askja (2 quakes between mag 0.5-1.4), Chaîne des Puys (1 quake mag 1.2), Churchill (1 quake mag 1.3), Clear Lake (26 quakes between mag 0.1-2.3), Coso (4 quakes between mag 0.9-1.1), Douglas (1 quake mag 1.8)
Eldey (1 quake mag 1.8), Eyafjallajökull (1 quake mag 1.1), Grímsvötn (3 quakes between mag 0.5-1.1), Gunung Semuning (Ranau caldera) (1 quake mag 3.5), Haku-san (1 quake mag 2.6), Hengill (8 quakes between mag 0.3-1.7), Katla (4 quakes between mag 0.8-2.5), Kilauea (5 quakes between mag 1.7-1.9), Krísuvík (63 quakes between mag 0.1-3.2), Lassen (1 quake mag 1.3), Long Valley (2 quakes between mag 0.7-1.1), Mammoth Mountain (1 quake mag 1.3), Maunaloa (3 quakes between mag 1.2-2.3), Nisyros (2 quakes between mag 1.7-1.9), Sabancaya (2 quakes between mag 3.5-3.6), Seulawah Agam (1 quake mag 2.7), Sousaki (1 quake mag 1.4), Tjörnes Fracture Zone (4 quakes between mag 0.9-1.5), Tungurahua (1 quake mag 2.9) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 20 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.


Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:

Clear Lake volcano (California): 26 earthquakes up to magnitude 2.3

Possible earthquake swarm: 26 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 12 minutes ago. Hypocenter depths ranged between 3.3 and 0.8 km.
Earthquake details: (only 5 largest)
2.3 quake 7km NW of The Geysers, CA, USA, 3 May 2021 06:35 GMT (17 km SSW)
2.2 quake 10km NW of The Geysers, CA, USA, 3 May 2021 01:38 GMT (15 km SSW)
1.9 quake 6km WNW of Cobb, CA, USA, 3 May 2021 08:28 GMT (15 km S)
1.7 quake 8km W of Cobb, CA, USA, 3 May 2021 17:51 GMT (16 km SSW)
1.4 quake 8km WNW of Cobb, CA, USA, 3 May 2021 09:42 GMT (15 km SSW)
All earthquakes at Clear Lake

Gunung Semuning (Ranau caldera) volcano (Sumatra): magnitude 3.5 earthquake

A magnitude 3.5 earthquake occurred at the volcano 10 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 2 km distance SSE from the volcano.
Earthquake details:
3.5 quake Lampung, 92 km south of Baturaja, South Sumatra, Indonesia, 3 May 2021 13:29 GMT (2 km SSE)
All earthquakes at Gunung Semuning (Ranau caldera)

Haku-san volcano (Honshu): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 11 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.5 km depth at 17 km distance NE from the volcano.
Earthquake details:
2.6 quake Ōno Gun, Gifu, 46 km southeast of Kanazawa, Ishikawa, Japan, May 03, 2021 21:34:53.17 (17 km NE)
All earthquakes at Haku-san

Katla volcano (Iceland): 4 earthquakes up to magnitude 2.5

4 earthquakes occurred near (under) the volcano during 27 minutes, the last being recorded quake 15 hours ago. Hypocenter depths ranged between 1.1 and 0.1 km.
Earthquake details:
2.5 quake 7.3 Km E of Goðabunga, Iceland, 3 May 2021 08:20 GMT (3 km NNW)
2.5 quake 8.2 Km ENE of Goðabunga, Iceland, 3 May 2021 08:18 GMT (4 km NNW)
1.9 quake 7.4 Km ENE of Goðabunga, Iceland, 3 May 2021 08:21 GMT (5 km NW)
0.8 quake 7.8 Km ENE of Goðabunga, Iceland, 3 May 2021 08:46 GMT (4 km NW)
All earthquakes at Katla

Krísuvík volcano (Reykjanes Peninsula, Iceland): 63 earthquakes up to magnitude 3.2

Possible earthquake swarm: 63 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 48 minutes ago. Hypocenter depths ranged between 8.0 and 1.1 km.
Earthquake details: (only 5 largest)
3.2 quake 4.0 Km N of Krýsuvík, Iceland, 3 May 2021 15:49 GMT (2 km ESE)
2.8 quake 4.9 Km E of Keilir, Iceland, 3 May 2021 03:28 GMT (1 km ESE)
2.0 quake 3.8 Km N of Krýsuvík, Iceland, 3 May 2021 04:14 GMT (2 km ESE)
1.9 quake 3.6 Km N of Krýsuvík, Iceland, 3 May 2021 03:04 GMT (2 km SE)
1.8 quake 4.0 Km N of Krýsuvík, Iceland, 3 May 2021 03:06 GMT (2 km ESE)
All earthquakes at Krísuvík

Maunaloa volcano (Hawai'i (Big Island)): 3 earthquakes up to magnitude 2.3

3 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 3 hours ago. Hypocenter depths ranged between 5.0 and 1.0 km.
Earthquake details:
2.3 quake 24 Km WNW of Volcano, Hawaii, USA, 3 May 2021 07:09 GMT (15 km E)
2.1 quake 24 Km WNW of Volcano, Hawaii, USA, 3 May 2021 07:10 GMT (15 km E)
1.2 quake 18 Km ENE of Honaunau-Napoopoo, Hawaii, USA, 3 May 2021 20:37 GMT (10 km WNW)
All earthquakes at Maunaloa

Sabancaya volcano (Peru): 2 earthquakes up to magnitude 3.6

2 earthquakes occurred near (under) the volcano during 1 hour 20 minutes, the last being recorded quake 9 hours ago. Hypocenter depths ranged between 9.0 and 8.0 km.
Earthquake details:
3.6 quake Provincia de Caylloma, 70 km north of Arequipa, Peru, 3 May 2021 13:52 GMT (15 km E)
3.5 quake Provincia de Caylloma, 69 km north of Arequipa, Peru, 3 May 2021 15:12 GMT (15 km E)
All earthquakes at Sabancaya

Seulawah Agam volcano (Sumatra): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 1 hour 46 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance SSW from the volcano.
Earthquake details:
2.7 quake 44 km southeast of Banda Aceh, Indonesia, 3 May 2021 22:03 GMT (16 km SSW)
All earthquakes at Seulawah Agam

Tungurahua volcano (Ecuador): magnitude 2.9 earthquake

A magnitude 2.9 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.0 km depth at 13 km distance N from the volcano.
Earthquake details:
2.9 quake Canton Patate, 21 km southeast of Ambato, Provincia del Tungurahua, Ecuador, 2021-05-03 12:47:33 (13 km N)
All earthquakes at Tungurahua